G-eobge wenzell



ENo Model.)

G. BN'ZELL,

SPRING BED. No. 277,639. Patented May'l5, 1883.

f 4 WITNESSES INVENTOR 625/, w, Q 7 a BY ATTORNEYS.

UNITED STATES PATENT OFFICE.

GEORGE VVENZELL, OF DETROIT, MICHIGAN, ASSIGNOR 0F ONE-HALF TO HENRY J. MEIER, OF SAME PLACE.

SPRING-BED.

SPECIFICATION forming part of Letters Patent No. 277,639, dated May 15, 1883.

Application filed November 20, 1882. (No model.)

To all whom it may concern:

Be it known that I, GEORGE WENZELL, of Detroit, Wayne county, Michigan, have invented a new-and Improved Spring-Bed, of which the .following is a full, clear, and exact description.

Myimprovement in spring-beds consists, es-

sentiall y, of a contrivance whereby the bed willbe depressed alike over all its surface by weight upon any part, thereby preserving the level of the bed, whether the occupant rest in the middle or side or end.

The contrivance of apparatus consists, essentially, of two frames connected by levers and a spring or springs, so that either framemay serve for the base, and will support the other, having the bed on it, by the spring or springs, which, together with the levers, preserve the level of the surface, while affording the required elasticity of the spring-bed, all as hereinafter fully described.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similarletters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective view of my improved spring-bed. Fig. 2 is a longitudinal sectional elevation of the same. Fig. 3 is a plan view, and Figs. 4 and 5 are details.

I make two rectangular frames, a and 0, cor responding in size and shape with the bedstead on which the spring-bed is to be used, said frames being of equal length and breadth, or frame I) may be a little narrower than (t, if desired, and I connect said frames together a suitable distance apart, one above another, by the levers c d and the spring 6, as here shown, or in any equivalent waythat is to say, the levers having fulcrums at f on the frame a, and being connected by arms 9 and pivotstuds I with the frame Z), and being connected together at t, where they support the strong spring 6, on which frame is supported by its cross-bar Studs it connect with frame I) in slots, and the connection of the levers at r? is by an adjusting-link contrivance, allowing the levers to vibrate freely as the weight upon the bed varies and the spring expands or contracts. The spring rests at one end on a follower, Z, in

-per surface of the bed.

a cup-extension,m,of lever d, with which there is an adj llStlDg-SCX'BW, n, by which the tension of the spring may be varied at will, and, if desired, the other end of the spring may bear in a cup, 0, adjustable by a screw, 1), in crossbar 70 to regulate the tension thereat.

'it will be seen that weight upon one end of the frame b will act alike on the other end to depress the bed by contracting the spring through the levers, thus maintaining the desired uniform level of the whole of the upper surface of the bed.

It will also be seen that, owing to the con struction of the levers with side arms, g, pressure upon one side of the bed will depress the other side and both ends alike. It is obvious that the levers may be ranged crosswise of the bediustead oflengthwise, as here shown,

if desired; and it is apparent that the springbed may be used either side up-that is to say, the frame b may be uppermost and have the webbing t for the support of the mattress attached to it, the frame a being supported on the bedstead or frame I) may rest on the bedstead, and frame a may have the webbing t for the mattress. Any form orcontrivance of canvas, wire net-work, slats, or other suitable top may be employed for the purposes of the said webbing t. v

The action of thecontrivance is substantially thesame whichever side up it is usedthatis to say, wherever the weightis placed itcauses the lever under it to compress the spring and at the same time to work the other lever, so as to effect uniform depression of the whole up- 1 do not limit myself to any particular contrivance of the fulcrums, pivots, and connecting devices of the levers, nor to the kind of spring, nor to number or arrangement of the spring or springs.

I The upper frame may have a rib or rail, q, at one or both ends. for retaining the mattress.

It is obvious thatinstead of using one spring 0 between the levers, one or more 'of such springs may be located between the frames 0 b at each end, as in dotted lines, Fig. 2, and I propose to construct the bed in that manner when preferred.

T do not mean to limit myself to the employment of a special lower frame when it may be preferred to utilize the bedstead therefor by mounting the fulcrumsj' on it in lieu of frame and pivots h will remain as represented, and

be reversed with the bed when it is reversed, said fulcrums and pivots working alike either side up, and the same. with the spring.

Having thus described my invention, Iclaim as new and desire to secure by Letters Patent- 1. The combination, in a spring bed, of frames at b, levers c and d, spring or springs c,- and suitable fulcrums, pivots, and lever-connections, enabling the level of the surface of the bed to be maintained, substantially as described.

2. The combination of levers c d, having connecting-joint i and arms 9, with frames at and b and spring a, substantially as described.

3. The levers 0 cl, fulcrumed on frame a, pivoted to frame I), and connected together at z,

in combination with spring a, supported on one of said levers, and cross-bar 70, supported on the springs, substantially as described.

4. The combination of follower Z, cup m, and

adjusting-screw n with levers c and d, spring. 0, and the frames a and b, substantially as de-' scribed. v

5. The combination of cap 0 and screw 19 with spring 6, frames a and b, and the levers c 01, substantially as described.

GEORGE WENZELL.

Witnesses:

HENRY WUNscH, WILLIAM NOACK. Jr 

